Vol. 11, issue 02-03, article # 40

pdf Ivanov V. N. Generation of the second harmonic of laser radiation due to light scattering by an ensemble of atoms drifting in the Markov thermostat. // Atmospheric and oceanic optics. 1998. V. 11. No. 02-03. P. 240-242.
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We present here a theoretical treatment of the nonlinear effect that occurs when the atoms scattering the light are disturbed by foreign particles that fly upon them from one side. We show that a quasi-constant multipole moment is induced in these atoms because of the anisotropy of such a medium. The interaction between this moment and the external radiation should yield the harmonics of the fundamental frequency in the spectrum of scattered radiation.